CN215118812U - Switch - Google Patents
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- CN215118812U CN215118812U CN202121698988.5U CN202121698988U CN215118812U CN 215118812 U CN215118812 U CN 215118812U CN 202121698988 U CN202121698988 U CN 202121698988U CN 215118812 U CN215118812 U CN 215118812U
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- opening
- closing
- coil plate
- operating mechanism
- connecting rod
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Abstract
The utility model discloses a switch, which comprises three moving contacts arranged at intervals and corresponding static contacts, wherein the lower ends of the three moving contacts are connected through rigid components; and the first operating mechanism and the second operating mechanism are respectively connected with the rigid component and are used for respectively executing corresponding actions according to the first operating instruction and/or the second operating instruction from the control system. The utility model can effectively avoid the problem of different stages of opening and closing of the load circuit breaker of the three-phase system; and the first operating mechanism and the second operating mechanism are mutually matched to realize the redundancy of switch operation, so that the possibility of switch failure is effectively reduced, and the safety of the whole intelligent power grid is improved.
Description
Technical Field
The utility model relates to an electrical technology field, concretely relates to switch.
Background
At present, with the increase of power consumption demand, in order to realize services which can more efficiently and rapidly meet the normal living order and social development demand of people, the development of a strong smart grid and the development of a high-performance and high-reliability circuit breaker matched with the smart grid are particularly urgent.
The circuit breaker is a switch for switching on and off the power of the electric locomotive and the electric train set. When a circuit has faults such as short circuit, grounding and the like, the circuit breaker can be quickly disconnected to play a role in protection, and the operation state of the circuit breaker directly influences the operation stability and the power supply reliability of the whole power system.
However, the operation of the circuit breaker is very frequent, so that the fault that the circuit breaker cannot be closed or pulled open frequently occurs, the failure of the circuit breaker threatens the safe operation of the system greatly, once a certain unit fails, the failure of the circuit breaker causes the tripping of the circuit breaker at the previous stage, and the safety accident of large-area power failure is caused, particularly the zero-sequence voltage current generated in the switching-on and switching-off phases of the three-phase system load circuit breaker is extremely unfavorable for the stability of the system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a switch can solve the circuit breaker and reject the problem of moving and circuit breaker divide-shut brake asynchronism among the correlation technique.
According to an aspect of the present invention, there is provided a switch, including: the three moving contacts and the corresponding static contacts thereof are arranged at intervals, wherein the lower ends of the three moving contacts are connected through a rigid component; and the first operating mechanism and the second operating mechanism are respectively connected with the rigid component and are used for respectively executing corresponding actions according to the first operating instruction and/or the second operating instruction from the control system.
Preferably, the first operating mechanism is fixedly connected with the rigid component through a first connecting rod, and the second operating mechanism is fixedly connected with the rigid component through a second connecting rod.
Preferably, the first operating mechanism comprises a first holding mechanism and a first driving mechanism, the first driving mechanism drives the three movable contacts to an opening and closing position through the first connecting rod, and the first holding mechanism holds the three movable contacts in the opening and closing position through the first connecting rod; the second operating mechanism comprises a second holding mechanism and a second driving mechanism, the second driving mechanism drives the three moving contacts to the opening and closing position through the second connecting rod, and the second holding mechanism holds the three moving contacts in the opening and closing position through the second connecting rod.
Preferably, the first driving mechanism comprises a first vortex disc, a first opening coil plate and a first closing coil plate, wherein the first opening coil plate and the first closing coil plate are arranged on the upper side and the lower side of the first vortex disc, and the first vortex disc can reciprocate between the first opening coil plate and the first closing coil plate; the second driving mechanism comprises a second vortex disc, a second switching coil plate and a second switching-on coil plate, wherein the second switching-off coil plate and the second switching-on coil plate are arranged on the upper side and the lower side of the second vortex disc, and the second vortex disc can reciprocate between the second switching-off coil plate and the second switching-on coil plate.
Preferably, the first holding mechanism includes a first opening holding yoke and a first closing holding yoke; the second holding mechanism includes a second opening holding yoke and a second closing holding yoke.
Preferably, the first operating mechanism includes a first suction plate, a lower end of the first connecting rod is fixedly connected to the first suction plate, and a central screw of the first operating mechanism sequentially passes through the first closing holding yoke, the first suction plate, the first opening holding yoke, the first opening coil plate, the first vortex disc and the first closing coil plate; the second operating mechanism comprises a second suction plate, the lower end of the second connecting rod is fixedly connected with the second suction plate, and a central screw of the second operating mechanism sequentially penetrates through the second closing holding magnetic yoke, the second suction plate, the second opening holding magnetic yoke, the second opening coil plate, the second vortex disc and the second closing coil plate.
Preferably, the first link comprises a first rotational structure; the second connecting rod comprises a second rotating structure; wherein the first link is arranged in parallel with the second link.
The scheme provided by the utility model is provided with the first operating mechanism and the second operating mechanism which can move respectively and independently, and the first operating mechanism or the second operating mechanism can move upwards or downwards and can drive the rigid part connected with the lower end of the three-phase moving contact to move together, so that the problem of different stages of opening and closing of the three-phase system load circuit breaker can be effectively avoided; and the first operating mechanism and the second operating mechanism are matched to realize the redundancy of switch operation, so that the possibility of switch failure is effectively reduced, and the safety of the whole intelligent power grid is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a front view of a switch according to an embodiment of the present invention; and
fig. 2 is a side view of a switch according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present invention, when an element is referred to as being "fixed" to another element, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a front view of a switch according to an embodiment of the present invention. The switch includes: the three moving contacts 2 and the corresponding static contacts 1 are arranged at intervals, wherein the lower ends of the three moving contacts 2 are connected together through a rigid component (driving shaft) 4. The first operating mechanism 31 and the second operating mechanism 32 are connected to the rigid member (driving shaft) 4, so that the first operating mechanism 31 and the second operating mechanism 32 can drive the three movable contacts to move when moving. As shown in the figure, the three movable contacts 2 are connected into a whole by a driving shaft 4, and the driving shaft 4 is connected with a first operating mechanism 31 and a second operating mechanism 32 respectively. The first operating mechanism 31 and the second operating mechanism 32 are used for executing corresponding actions according to the first operating instruction and/or the second operating instruction from the control system. Wherein the control system is operable to send first operating instructions and/or second operating instructions to the first operating means 31 and/or the second operating means 32 in case of a line fault. In this embodiment, the lower ends of the three moving contacts 2 may be connected to the driving shaft 4 through insulating rods 51, 52, 53, or may be connected to the driving shaft by other conventional technical means, and in addition, the lower ends of the three moving contacts are not limited to be connected to the driving shaft, and any rigid component that can connect the three moving contacts into a whole falls within the protection scope of this patent.
The embodiment provided by the utility model can ensure the synchronism of the three-phase system load circuit breaker opening and closing when the intelligent power grid fails; and the redundancy of switch operation can be realized through the mutual cooperation of the first operating mechanism and the second operating mechanism, so that the possibility of switch operation rejection is effectively reduced.
Fig. 2 is a side view of a switch according to an embodiment of the present invention. The rigid component (driving shaft) connected with the lower end of the moving contact is fixedly connected with the first operating mechanism through a first connecting rod and is fixedly connected with the second operating mechanism through a second connecting rod. As shown in the figure, a rigid member (driving shaft) 4 connected to the lower end of the movable contact 2 is fixedly connected to the first operating mechanism 31 through a first link 61. Although not shown, it will be understood by those skilled in the art that the rigid member (driving shaft) 4 connected to the lower end of the movable contact 2 is fixedly connected to the second operating mechanism through a second link.
In this embodiment, the rigid component (driving shaft) connected to the lower end of the movable contact is respectively and fixedly connected to the first operating mechanism and the second operating mechanism through the first connecting rod and the second connecting rod, but those skilled in the art can understand that in order to enable the movement of the operating mechanism to simultaneously drive the upward or downward movement of the three movable contacts, other technical solutions capable of achieving the purpose are still protected by this patent.
The embodiment of the utility model provides an in, through adding first connecting rod and second connecting rod, when guaranteeing operating device's operation driven, can avoid the vertical direction shape of switch too huge, be favorable to the miniaturized design of switch.
The first operating mechanism can also comprise a first retaining mechanism and a first driving mechanism, the first driving mechanism drives the three moving contacts to the opening and closing positions through the first connecting rod, and the first retaining mechanism retains the three moving contacts in the opening and closing positions through the first connecting rod; the second operating mechanism comprises a second holding mechanism and a second driving mechanism, the second driving mechanism drives the three moving contacts to the opening and closing position through the second connecting rod, and the second holding mechanism holds the three moving contacts in the opening and closing position through the second connecting rod.
In this embodiment, when the moving contacts are in a closing state, the first driving mechanism drives the three moving contacts to move through the first connecting rod, so that a gap is generated between the moving contact and the fixed contact, and the disconnection of the voltage and the current of the line is completed.
When the moving contacts are in a switching-off state, the first driving mechanism drives the three moving contacts to move through the first connecting rod, so that the moving contacts and the static contacts are contacted, and the voltage and the current of the line are conducted. At this time, the first holding mechanism firmly holds the three movable contacts in the switching-on position through the first connecting rod.
As shown in the figure, the first driving mechanism may include a first opening coil plate 314, a first vortex plate 315, and a first closing coil plate 316, wherein the first opening coil plate 314 and the first closing coil plate 316 are disposed on upper and lower sides of the first vortex plate 315, and the first vortex plate 315 may reciprocate between the first opening coil plate 314 and the first closing coil plate 316; although not shown, it will be understood by those skilled in the art that the second driving mechanism may include a second vortex plate, a second opening coil plate and a second closing coil plate, wherein the second opening coil plate and the second closing coil plate are disposed on upper and lower sides of the second vortex plate, and the second vortex plate may reciprocate between the second opening coil plate and the second closing coil plate.
As shown in the figure, the first operating mechanism further includes a first suction plate 312, a lower end of the first connecting rod is fixedly connected to the first suction plate 312, and a central screw of the first operating mechanism sequentially passes through a first closing holding yoke 311, the first suction plate 312, a first opening holding yoke 313, a first opening coil plate 314, a first vortex disc 315 and a first closing coil plate 316; although not shown, it will be understood by those skilled in the art that the second operating mechanism includes a second suction plate, a lower end of the first link is fixedly connected to the first suction plate 312, and a lower end of the second link passes through the second closing holding yoke, the second suction plate, the second opening holding yoke, the second opening coil plate, the second vortex plate, and the second closing coil plate in sequence.
When the moving contact is in a closing state, a certain large current is applied to the opening coil on the first opening coil plate 314, the large current generates a variable magnetic field eddy current in the opening coil on the first opening coil plate 314, the variable magnetic field eddy current generates a repulsive force to the first vortex plate 315 to push the first vortex plate 315 to move, the first vortex plate 315 drives the moving contact 2 to move downwards through the first suction plate 312, a gap is generated between the moving contact and the fixed contact, and the disconnection of the voltage and the current of the line is completed. At this time, the first opening holding yoke 313 contains a ferromagnetic magnet and generates an attraction force to the first attraction plate 312, so that the movable contact 3 is always in the opening state.
Similarly, when the movable contact is in a closing state, a certain large current is applied to the opening coil on the second opening coil plate, the large current generates a variable magnetic field eddy current in the opening coil on the second opening coil plate, the variable magnetic field eddy current generates repulsion force on the second eddy current disc to push the second eddy current disc to move, the second eddy current disc drives the movable contact to move downwards through the second suction plate, a gap is generated between the movable contact and the fixed contact, and the disconnection of the voltage and the current of the circuit is completed. At the moment, the second opening holding magnetic yoke contains a strong magnetic magnet to generate attraction force on the second suction plate, so that the movable contact is always in an opening state.
When the moving contact is in an open state, a certain large current is applied to a closing coil in the first closing coil plate 316, the large current generates a variable magnetic field eddy current in the closing coil in the first closing coil plate 316, the variable magnetic field eddy current generates a repulsive force on the first eddy disk 315 to push the first eddy disk 315 to move, the first eddy disk 315 drives the moving contact 3 to move through the first attraction plate 312, the moving contact and the fixed contact are contacted, and the voltage and current conduction of a line is completed. At this time, the first closing holding yoke 311 contains a ferromagnetic magnet to generate an attraction force to the first attraction plate 312, and the movable contact 3 is always in a closed state.
Similarly, when the movable contact is in an open-brake state, a certain large current is applied to a closing coil in the second closing coil plate, the large current generates a variable magnetic field eddy current in the closing coil in the second closing coil plate, the variable magnetic field eddy current generates a repulsive force to the second eddy current disc to push the second eddy current disc to move, the second eddy current disc drives the movable contact to move through the second attraction plate, the movable contact and the fixed contact are contacted, and the voltage and the current of the line are conducted. At this time, the second closing holding yoke contains a ferromagnetic magnet to generate an attraction force to the second attraction plate, so that the moving contact is always in a closing state.
Specifically, the first link includes a first rotating structure; the second connecting rod comprises a second rotating structure; wherein the first connecting rod and the second connecting rod are arranged in parallel. When the first operating mechanism located on one side of the first connecting rod moves, the moving contact can move upwards or downwards through the first rotating structure included by the first connecting rod, similarly, when the second operating mechanism located on one side of the second connecting rod moves, the moving contact can move upwards or downwards through the second rotating structure included by the second connecting rod, and because the first operating mechanism and the second operating mechanism can move independently, the opening and closing action of the moving contact can be realized, and therefore, the possibility of refusing the action of the switch can be effectively reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A switch, comprising:
the three moving contacts and the corresponding static contacts thereof are arranged at intervals, wherein the lower ends of the three moving contacts are connected through a rigid component; and
and the first operating mechanism and the second operating mechanism are respectively connected with the rigid component and are used for respectively executing corresponding actions according to the first operating instruction and/or the second operating instruction from the control system.
2. The switch of claim 1,
the first operating mechanism is fixedly connected with the rigid component through a first connecting rod, and the second operating mechanism is fixedly connected with the rigid component through a second connecting rod.
3. The switch of claim 2,
the first operating mechanism comprises a first holding mechanism and a first driving mechanism, the first driving mechanism drives the three moving contacts to an opening and closing position through the first connecting rod, and the first holding mechanism holds the three moving contacts at the opening and closing position through the first connecting rod;
the second operating mechanism comprises a second holding mechanism and a second driving mechanism, the second driving mechanism drives the three moving contacts to the opening and closing position through the second connecting rod, and the second holding mechanism holds the three moving contacts in the opening and closing position through the second connecting rod.
4. The switch of claim 3,
the first driving mechanism comprises a first vortex disc, a first opening coil plate and a first closing coil plate, wherein the first opening coil plate and the first closing coil plate are arranged on the upper side and the lower side of the first vortex disc, and the first vortex disc can reciprocate between the first opening coil plate and the first closing coil plate;
the second driving mechanism comprises a second vortex disc, a second switching coil plate and a second switching-on coil plate, wherein the second switching-off coil plate and the second switching-on coil plate are arranged on the upper side and the lower side of the second vortex disc, and the second vortex disc can reciprocate between the second switching-off coil plate and the second switching-on coil plate.
5. The switch of claim 4, wherein the first retention mechanism comprises a first opening retention yoke and a first closing retention yoke; the second holding mechanism includes a second opening holding yoke and a second closing holding yoke.
6. The switch according to claim 5, wherein the first operating mechanism comprises a first suction plate, a lower end of the first connecting rod is fixedly connected with the first suction plate, and a central screw of the first operating mechanism sequentially passes through the first closing holding yoke, the first suction plate, the first opening holding yoke, the first opening coil plate, the first vortex disc and the first closing coil plate;
the second operating mechanism comprises a second suction plate, the lower end of the second connecting rod is fixedly connected with the second suction plate, and a central screw of the second operating mechanism sequentially penetrates through the second closing holding magnetic yoke, the second suction plate, the second opening holding magnetic yoke, the second opening coil plate, the second vortex disc and the second closing coil plate.
7. The switch according to any one of claims 2 to 6,
the first link includes a first rotational structure;
the second connecting rod comprises a second rotating structure;
wherein the first link is arranged in parallel with the second link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121698988.5U CN215118812U (en) | 2021-07-26 | 2021-07-26 | Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121698988.5U CN215118812U (en) | 2021-07-26 | 2021-07-26 | Switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215118812U true CN215118812U (en) | 2021-12-10 |
Family
ID=79318614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121698988.5U Active CN215118812U (en) | 2021-07-26 | 2021-07-26 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215118812U (en) |
-
2021
- 2021-07-26 CN CN202121698988.5U patent/CN215118812U/en active Active
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